Ipsita Das, Dmitri K. Efetov, ICFO Spain and Benjamin A. Piot, LNCMI Grenoble. Different interacting phases such as correlated insulators, superconductors, magnetic states, Chern insulators, strange metals, anomalous quantum Hall effect etc. have been extensively studied in the flat band of magic-angle twisted bilayer graphene (MATBG) in the last few [...]
Frank Stefani und Thomas Herrmannsdörfer, HZDR and HLD Dresden. The heating of the Sun‘s corona to temperatures of several million kelvin is one of the major unsolved problems of solar physics. Although magnetic fields are unambiguously considered responsible for the “pot being hotter than the stove”, it remains controversial whether [...]
Michal Vališka, CEA-Grenoble and Charles University Prague, William Knafo, LNCMI Toulouse and Daniel Braithwaite, CEA-Grenoble. The discovery of superconductivity in the heavy-fermion paramagnet UTe2 has attracted a lot of attention, particularly due to the reinforcement of superconductivity near quantum phase transitions induced by magnetic field and/or pressure. In this system, [...]
Km Rubi and Uli Zeitler, HFML Nijmegen and Walter Escoffier, LNCMI Toulouse. A team of researchers from HFML-Nijmegen, LNCMI-Toulouse, and the National University of Singapore investigated the electronic properties of the quasi two-dimensional electron gas (2DEG) at a new 5d-oxide heterointerface, LaAlO3/KTaO3. The team induced high-mobility carriers at the interface [...]
Ivan Breslavetz and Clément Faugeras, LNCMI Grenoble. To flesh out the phase diagrams of novel material systems, researchers must examine these materials under extreme conditions. We have designed an experimental setup for optical spectroscopy that simultaneously offers three extremes: low temperature, a strong magnetic field, and high pressure imposed by [...]
Paragraf™ has leveraged its expertise in the manufacturing & implementation of graphene technology to make another major advance in Hall-sensor performance. The company has announced the availability of a new sensor range capable of unmatched sensitivity and linearity when placed in low-temperature environments and in strong magnetic fields. Tested at [...]
Toni Helm, HLD Dresden. Currently, a group of semimetals excites the physics community due to its intriguing properties derived from massless chiral particles— so-called Weyl fermions. As a consequence of linear band crossings at the Fermi energy and a high Fermi velocity, massless Weyl states can be the origin of [...]
Jake Ayres, University of Bristol, Maarten Berben and Nigel Hussey, HFML Nijmegen. Researchers from HFML-EMFL, UK, Netherlands, and Japan studied the high-field magnetotransport properties of overdoped high-Tc cuprates and found behavior that is strikingly different from that of ordinary metals. For the latter, the resistivity increases quadratically with temperature and [...]
Piotr Kapuściński and Marek Potemski, LNCMI Grenoble. Strong Coulomb correlations together with multi-valley electronic bands in the presence of spin-orbit interaction are at the heart of studies of the rich physics of excitons in semiconductor structures made of monolayers of transition-metal dichalcogenides (TMD). These archetypes of two-dimensional systems promise the [...]
Stanislaw Galeski, MPI CPfS Dresden and Sergei Zherlitsyn, HLD Dresden. The quantum Hall effect (QHE) is traditionally considered to be a purely two-dimensional (2D) phenomenon. Recently, however, a three-dimensional (3D) version of the QHE was reported in the Dirac semimetal ZrTe5. Researchers from Germany, USA, and Sweden have now succeeded [...]